Heater.



PATENTED SEPT. 4, 1906.

J. W. MELLOTT.

HEATER.

APPLIOATION FILED ooT .9, 1905.

JOHN W. MELLOTT, OF SHERIDAN, PENNSYLVANIA.

HEATER.

Specification of Letters Patent.

Patented Sept. 4, 1906.

Application filed October 9, 1905. Serial No. 281.948.

To all whom it may concern:

Be it known that I, JOHN W. MELLOTT, a citizen of the United States of America, residing at Sheridan,in the county of Allegheny and State of Pennsylvania, have invented vuseful improvements in heaters; and the invention relates more particularly to a heater wherein gas, gasolene, or kerosene is usedfas a fuel.

My invention aims to provide a novel form of heater wherein perfect and reliable means are provided for effecting a positive heating of cold air allowed to pass through the furnace. In this connection my improved furnace is particularly adapted for heating rooms, compartments, or large halls and is constructed to insure a perfect heating of the cold air which passes through the heater into the above-mentioned rooms or compartments. To this end I have provided a heater wherein the cold air admitted to the same has a straight and unobstructed course to pass through, this being accomplished by dispensing with feed-doors and ash-pits.

My invention' further aims to provide novel means for heatingcold water, said means being so arranged within the furnace as to receive thevfull effect of the heating medium, at the same time not interfering with the general arrangement and operativeness of the heater or furnace.

With the above and other objects'in view, which will more readily appear as the nature of the invention is better understood, the same consists in the novel construction, combination, and arrangement of parts to be hereinafter more fully described and claimed.

Referring to the drawings accompanying this application, like numerals of reference designate corresponding parts throughout the several views, in whichd Figure 1 is a perspective view of my improved heater or furnace, a portion of the same being broken away to show the various compartments, iiues, and pipes thereof. Fig. 2 is a vertical sectional view of the heater, and Fig. 3 is a horizontal sectional view taken on the line a' a; of Fig. 2 looking in the-direction of the arrow.

To put my invention into practice, my improved heater or furnace is constructed of an outer shell or casing 1, which is cylindrical in form and is used in a vertical position. The shell or casing is provided with a frustrated cone-shaped cap 2, having a central indenture or recess 3, which serves as a deiiector. The cap 2 is mounted upon the top of the shell or casing 1, and its inclined sides are provided with a plurality of openings 4, which communicate with radially-disposed flues 5 5, that lead to the various rooms or compartments of a building. The shell or casing 1 is preferably mounted upon an annular base-plate 5', and in the side of said shell, adjacent to the base-plate 5, is formedv an opening 6, which communicates with a suitable cold-airsupply pipe 7.

In the shell or easing near its lower end are transversely-arranged bars 8 S, and upon these bars is mounted an annular plate 9, which supports a vertically-disposed cylindrical shell 10. The upper end of the shell is provided with an exhaust-flue l1, that extends through an opening 12, .formed in the outer shell or casing 1. The plate 9 is provided with a central opening 14, and mounted in this opening is an inner cylindrical casing 15, that extends upwardly within the shell 10. Surrounding the inner casing at its lower end and resting upon the plate 9 is a burner-casing 16, said casing being provided with a plurality of staggeredly-arranged apertures 17. Into the burner-casing is admitted the fuel to be ignited, said fuel passing through air-mixers 18, mounted below the plate 9 and communicating with the burner-casing. These air-mixers are fed with fuel from a suitable supply-pipe 19, that extends outside ofA the shell or casing 1. In order to establish a perfect combustion of the products of the fuel, the plate 9, adjacent to the burner-casing 16, is provided with a plurality of air-inlet apertures 20.

In the inner casing are supported two vertically-disposed tubes 21 and 22, the tube 2l being of a smaller diameter than the tube 22 and arranged within said tube, whereby an annular compartment 23 will be formed between said tubes and the furnace or .heater will have a central vertically-disposed opening 24 from the bottom of said heater to the top thereof. The annular compartment 23 communicates with the exterior of the inner casing by four radially-disposed pipes 25, which are placed adjacent to the burner-easing 16, while at the top of the inner casing are arranged three radially-disposed pipes 26,

IOS

these pipes also establishing communication between the annular compartment 23 and the exterior of the inner casing.

Supporting and also bracing the inner casing about midway the length of the shell 10 is a horizontal partition 27, this partition serving functionally as a deflector and as a support for a tubing 28. The tubing 28 is Wound around the inner casing upon the partition 27, the ends of said tubing extending through the shell 10 andthe outer casing 1, as at 29 (See Fig. 3.) The tubing 28 is sus,- pended in brackets '31 31,v carried by the inner casing 15. I

When my improved furnace is being used, the products of combustion pass upwardly between the cylindrical shell 10 and the inner casing 15, passing through the radially-disposed pipes 25 to the annular compartment 23, the products of combustion circulating around the inner tubing 21 until they arrive at the top of said com artment, at which .time the products of com ustion pass through the pi es 26 and out through the ilue 11 to a suitab e chimney or stack. (Not shown.) The fresh air entering through the pipe 7 passes upwardly in the central opening 24 of the furnace formed by the inner tubing 21, also the annular passage-way between the inner shell and the outer tubing 22, this fresh air being baffled by the pi es 25 and 26, which pass transversely of t e passage-way, causing the fresh air to be exposed to the heated sides of the inner casing 15 and the outer tubing 22. Thus the air is thoroughly heated before reaching the top of the furnace and it is at liberty to commingle with the air that is heated when passing upwardly between the cylindrical shell 10 and the outer shell or casing 1, this air also being heated by the heated sides of the cylindrical shell 10. In this manner the air which enters the furnace or heater becomes thoroughly heated before it is permitted. to pass through the various lues 5 to the compartment or rooms to be heated. During the operation of the furnace or heater the recess formed in the cap 2 servesto deflect the hot air toward the flues. Another important feature of my inven tion resides in combining a hot-water heater with the furnace, the heating of the water being accomplished by the coil of tubing 28, suspended from the partition 27. This coil of tubing will be continuously subjected dur-A ing the operation of the furnace to the heat generated directly below it, the liames and products of combustion of the burner oftentimes playing directly upon the tubing and causing the water passing through said tubing to be thoroughly heated, the heating of the water being continuous, if so desired.

From the foregoing description it will be observed that I have devised a furnace wherein an easy and unobstructed passage is provide-d for the cold air, thereby increasing the efficiency of the furnace and providing a construction which will be extremely simple, strong and durable, and comparatively inexpensive to manufacture. The construction of the furnace also makes it extremely easy to be cleansed and frees it from all danger of being injured by constant use.

It is thought from the foregoing that the construction, operation, and advantages of the herein-described furnace or heater will be apparent without further description, and various changes in the form, proportion, and minor details of construction may be resorted to without departing from the spirit of the invention or sacrificing any of the advantages thereof.

What I claim, and desire to secure by Letters Patent, is-.

1. A heater comprising an outer shell provided with a cold-air inlet and hot-air outlet flues, an inner shell provided with a dischargeflue for the products of combustion, an inner casing within vthe inner shell, providing in conjunction with said inner shell, anv annular heating-chamber, concentric tubes within said inner casing providing hot-air passages, radially-disposed pipes for establishing communication between said heating-chamber and the space between said tubes, a burnercasing located at the base of said inner casing and having a fuel-inlet, andv a coil of tubing supported between said inner shell and IOO IIO

3. A heater comprising an outer shell, an l inner shell, an inner casing within said inner shell, concentric tubes within said casing, the space between said tubes being closed at top and bottom, radially disposed tubes connectin' the space between the tubes with the space between the casing and inner shell, a burner located between the casing and inner shell, an annularly-disposed coil of tubing above said burner, and inlet and outlet pipes for air and water.

4. -In a heater, the combination with an inner and an outer shell, of a casing within said inner shell, concentric pipes within said casing providing a straight central air-passage the space between said pipes being closed at top and bottom, radially-disposed pipes for conducting the products of combustion from.

the space between the casing and inner shell l to the closed space between said tubes, radially-disposed tubes to conduct the products In testimony whereof I affix my signature in the presence of two witnesses.

of combustion from the closed space between JOHN W' MELLOTT' 5 the concentric pipes to a discharge-Hue, a Witnesses:

burner surrounding said casing, and e coil of H. C. EVERT,

tubing Kebove seid burner. E. E. POTTER. 

